The 2011 Bank of the West Classic was a women's tennis tournament played on outdoor hard courts. It was the 40th edition of the Bank of the West Classic, and was a part of the WTA Premier tournaments of the 2011 WTA Tour. It took place at the Taube Tennis Center in Stanford, California, United States, from July 26 through July 31, 2011. It was the first women's event on the 2011 US Open Series. Unseeded Serena Williams won the singles title.
| Nation | Player | Ranking* | Seed | |
|---|---|---|---|---|
| Victoria Azarenka | 4 | 1 | ||
| 5 | 2 | |||
| 9 | 3 | |||
| 10 | 4 | |||
| 14 | 5 | |||
| Julia Görges | 16 | 6 | ||
| 18 | 7 | |||
| Dominika Cibulková | 20 | 8 |
The following players received wildcards into the singles main draw
The following players received entry from the qualifying draw:
See main article: 2011 Bank of the West Classic – Singles qualifying.
See main article: 2011 Bank of the West Classic – Singles. 
Serena Williams defeated 
Marion Bartoli, 7–5, 6–1
See main article: 2011 Bank of the West Classic – Doubles. 
Victoria Azarenka / 
Maria Kirilenko defeated Liezel Huber / Lisa Raymond, 6–1, 6–3
